/*
 * Copyright 2023 Sweden Connect
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package se.swedenconnect.ca.service.base.configuration.health;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.boot.actuate.health.Status;
import org.springframework.stereotype.Component;

import lombok.extern.slf4j.Slf4j;

/**
 * Service health indicator bean.
 */
@Component
@Slf4j
public class ServiceHealthIndicator implements HealthIndicator {

  private final ServiceInfo serviceInfo;

  /**
   * Constructor for the service health indicator
   *
   * @param serviceInfo information about the service being monitored for health issues
   */
  @Autowired
  public ServiceHealthIndicator(final ServiceInfo serviceInfo) {
    this.serviceInfo = serviceInfo;
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public Health health() {
    try {
      this.serviceInfo.testConfiguration();
    }
    catch (final RuntimeException ex) {
      if (ex instanceof ServiceHealthWarningException) {
        log.warn("The CA Service has a health warning: {}", ex.getMessage());
        return Health
            .status(new Status("WARNING", ex.getMessage()))
            .withDetails(((ServiceHealthWarningException) ex).getDetails())
            .build();
      }
      log.warn("The CA Service has a negative health state: {}", ex.getMessage());
      return Health
          .down()
          .withDetail("error-message", ex.getMessage())
          .build();
    }
    return Health.up().build();
  }

}
